The operand structures specify what various operands (labeled a, b, c, ...) mean. The implied context is forethought, since only forethought operators can have a variable number of operands; however, the same rules apply to infix and RP uses of VUhU.
| 
               su'i  | 
            
               plus  | 
            
               (((a + b) + c) + ...)  | 
          
| 
               pi'i  | 
            
               times  | 
            
               (((a × b) × c) × ...)  | 
          
| 
               vu'u  | 
            
               minus  | 
            
               (((a − b) − c) − ...)  | 
          
| 
               fe'i  | 
            
               divided by  | 
            
               (((a / b) / c) / ...)  | 
          
| 
               ju'u  | 
            
               number base  | 
            
               numeral string   | 
          
| 
               pa'i  | 
            
               ratio  | 
            
               the ratio of   | 
          
| 
               fa'i  | 
            
               reciprocal of/multiplicative inverse  | 
            
               1 / a  | 
          
| 
               gei  | 
            
               scientific notation  | 
            
               b × (c [default 10] to the   | 
          
| 
               ge'a  | 
            
               null operator  | 
            
               (no operands)  | 
          
| 
               de'o  | 
            
               logarithm  | 
            
               log   | 
          
| 
               te'a  | 
            
               to the power/exponential  | 
            
               
  | 
          
| 
               fe'a  | 
            
               nth root of/inverse power  | 
            
               bth root of a (default square root: b = 2)  | 
          
| 
               cu'a  | 
            
               absolute value/norm  | 
            
               | a |  | 
          
| 
               ne'o  | 
            
               factorial  | 
            
               a!  | 
          
| 
               pi'a  | 
            
               matrix row vector combiner  | 
            
               (all operands are row vectors)  | 
          
| 
               sa'i  | 
            
               matrix column vector combiner  | 
            
               (all operands are column vectors)  | 
          
| 
               ri'o  | 
            
               integral  | 
            
               integral of a with respect to b over range c  | 
          
| 
               sa'o  | 
            
               derivative  | 
            
               derivative of a with respect to b of degree c (default 1)  | 
          
| 
               fu'u  | 
            
               non-specific operator  | 
            
               (variable)  | 
          
| 
               si'i  | 
            
               sigma (Σ) summation  | 
            
               summation of a using variable b over range c  | 
          
| 
               va'a  | 
            
               negation of/additive inverse  | 
            
               -a  | 
          
| 
               re'a  | 
            
               matrix transpose/dual  | 
            
               a*  |